Minimal theme how to add divider lines between 2 sections

[Discraft]

Hey i wanted to add a divider line like the header ( check picture 2 ) but i cant seem to figure it out. I want it to separate my in sale collection to my categories one with the divider line ( from picture 2 ) because right now the only way i found to separe them is to put the newsletter between them ( check picture 1 ) but it isnt fitting in my opinion so i would like to replace the newsletter into a divider line like in the top thx.

my shop: https://artsofthestreet.com/ or arts-of-the-street.myshopify.com

[dmwwebartisan]

@Discraft

Please add the following code at the bottom of your assets/theme.scss.liquid file.

div#shopify-section-160315939754a760bf {
    border-top: 1px solid #fff;
}

Hope this helps.

Thanks!